Re: Amigas with both Zorro-II and Zorro-III RAM?
Am 04.12.2018 um 23:32 schrieb Johny Five <koxman@gmail.com>:
> You mean A3000 or A4000 with some onboard/cpu accelerator FastRam + ZorroRAM/BigRAM in Zorro3 slot?
>
> On Tue, Dec 4, 2018 at 11:23 PM Michael Schmitz <schmitzmic@gmail.com> wrote:
> All,
>
> anyone on this list with an Amiga running Linux that has both Zorro-II
> and Zorro-III RAM installed, so would trigger the warning message:
>
> "%dK of Zorro II memory will not be used as system memory\n"
>
> early during booting the kernel?
>
> Would be nice to get Geert's patch (see
> <20181204195014.21461-1-geert@linux-m68k.org>) tested on such a system.
Yes, this should be the same with the BigRamPlus extension, except that on Amigas the address scheme is of course different and Amigas will use memory priorities (the faster the memory is, the higher the priority is).
ChipRam should be priority 0, normal (fake) FastRam is about priority 20 or so while real FastRam on an accel board like Cyberstorm MK2 is about priority 40 or so.
See also http://amiga.nvg.org/amiga/reference/Hardware_Manual_guide/node00D4.html or https://www.amigacoding.com/index.php/Amiga_memory_map for a quick reference or search for my post on this ML about the BigRamPlus in Spice/Arrakis.
For that link you can see several memory chunks like Chip Memory, Zorro II Memory Expansion space, Expansion Memory, Motherboard Fast RAM, maybe Copressor Slot Expansion and Zorro III Expansion.
I’m not sure if that patch will fix that issue, but neither I’m a kernel hacker nor a programmer, nor do I know if memoryblock is a block of memory or memory to block from being used. ;-)
Back then during the discussion about BigRamPlus donation by Debian the conclusion was that memory pools need to be ported to make use of the BRP which would also solve the issue of ST-RAM for the Ataris, IIRC.
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